py2cwl Usage Python to CWL JSON python py2cwlwriter.py > <file.cwl> Python to CWL YAML (messy) python py2cwlwriter.py | json2yaml > <file.yml> purifyCWL python purifyCWL.py -j <input.json> -o <output_filename> migrate_apps (soon) json2yaml: Mac: brew install json2yaml Node: npm install -g json2yaml